Transient pacing pulse on the T-wave: What is the mechanism?

Abstract

A patient with a dual-chamber pacemaker for sick sinus syndrome was hospitalized for heart failure. The electrocardiography (ECG) during hospitalization displayed seemingly abnormal pacing artifacts. This report focuses on the problem-solving of an abnormal-looking paced ECG and identifies the pacemaker's operational behavior as the underlying reason.

Keywords

• Pacemaker
• Atrioventricular delay
• Lower rate
• AV Search+